Nuclear Clock Powered by Single Thorium Ion

Ultra-high vacuum chamber housing an RF ion trap where single thorium atoms are suspended and laser-cooled to near absolute zero temperature.

A clock accurate to within a tenth of a second over 14 billion years – the age of the universe – is the goal of research being reported this week by scientists from three different institutions. To be published in the journal Physical Review Letters, the research provides the blueprint for a nuclear clock that would get its extreme accuracy from the nucleus of a single thorium ion. Read More →